Climate controls on rainfall isotopes and their effects on cave drip water and speleothem growth: the case of Molinos cave (Teruel, NE Spain)

Moreno, Ana; Sancho, Carlos; Bartolomé, Miguel; Oliva‐Urcia, Belén; Huertas, António Delgado; Estrela, María José; Corell, David; López‐Moreno, Juan I.; Cacho, Isabel

doi:10.1007/s00382-014-2140-6

Cited by 48 publications

(45 citation statements)

References 42 publications

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“…On the interannual timescale, we thus expect lower δ 18 O values for years with increased October-April precipitation, consistent with the interpretation for other Mediterranean speleothem δ 18 O records (Ayalon et al, 1998;Ayalon et al, 2002;Bard et al, 2002). However, during D/O events, SSTs on the Iberian margin and in the Alboran Sea were higher (Figure 3) (Moreno et al, 2014) preventing the possibility of disentangling precipitation originating in the Atlantic from that originating from the Mediterranean region. This also implies that the transport distance of the water vapor and potential rain-out effects (McDermott, 2004;Mook, 2001) are not dominant because the Mediterranean is the more local moisture source compared to the more distant Atlantic.…”

Section: Geophysical Research Letterssupporting

confidence: 85%

Western Mediterranean Climate Response to Dansgaard/Oeschger Events: New Insights From Speleothem Records

Budsky

Wassenburg

Mertz‐Kraus

et al. 2019

Geophysical Research Letters

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The climate of the western Mediterranean was characterized by a strong precipitation gradient during the Holocene driven by atmospheric circulation patterns. The scarcity of terrestrial paleoclimate archives has precluded exploring this hydroclimate pattern during Marine Isotope Stages 5 to 3. Here we present stable carbon and oxygen isotope records from three flowstones from southeast Iberia, which show that Dansgaard/Oeschger events were associated with more humid conditions. This is in agreement with other records from the Iberian Peninsula, the Mediterranean, and western Europe, which all responded in a similar way to millennial‐scale climate variability in Greenland. This general increase in precipitation during Dansgaard/Oeschger events cannot be explained by any present‐day or Holocene winter atmospheric circulation pattern. Instead, we suggest that changes in sea surface temperature played a dominant role in determining precipitation amounts in the western Mediterranean.

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Section: Geophysical Research Letterssupporting

confidence: 85%

Western Mediterranean Climate Response to Dansgaard/Oeschger Events: New Insights From Speleothem Records

Budsky

Wassenburg

Mertz‐Kraus

et al. 2019

Geophysical Research Letters

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“…Interpreting changes in oxygen isotope composition at BG and GCL during intervals of profound climatic change such as the last glacial period is complicated by the multiple factors that influenced δ 18 O values of precipitation at these sites, including shifts in moisture source. The potential exists for rainfall in Iberia to be derived from atmospheric moisture sources that change on synoptic and seasonal scales (Moreno et al, 2014;Gimeno et al, 2010Gimeno et al, , 2012 as well as in response to changing glacial boundary conditions (Florineth and Schlüchter, 2000;Kuhlemann et al, 2008;Luetscher et al, 2016). In addition, strong but opposite correlations exist in modern precipitation between rainwater δ 18 O values and (i) the regional air temperature (r = +0.8) and (ii) rainfall amount (r = −0.8), both of which are related to the strong seasonality of precipitation associated with Meso-Mediterranean climates (IPMA, 2016).…”

Section: U-mentioning

confidence: 99%

A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles

et al. 2018

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Abstract. Close coupling of Iberian hydroclimate and North Atlantic sea surface temperature (SST) during recent glacial periods has been identified through the analysis of marine sediment and pollen grains co-deposited on the Portuguese continental margin. While offering precisely correlatable records, these time series have lacked a directly dated, site-specific record of continental Iberian climate spanning multiple glacial cycles as a point of comparison. Here we present a high-resolution, multi-proxy (growth dynamics and δ13C, δ18O, and δ234U values) composite stalagmite record of hydroclimate from two caves in western Portugal across the majority of the last two glacial cycles (∼220 ka). At orbital and millennial scales, stalagmite-based proxies for hydroclimate proxies covaried with SST, with elevated δ13C, δ18O, and δ234U values and/or growth hiatuses indicating reduced effective moisture coincident with periods of lowered SST during major ice-rafted debris events, in agreement with changes in palynological reconstructions of continental climate. While in many cases the Portuguese stalagmite record can be scaled to SST, in some intervals the magnitudes of stalagmite isotopic shifts, and possibly hydroclimate, appear to have been somewhat decoupled from SST.

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“…Moisture source is the third main driver for δ 18 O spel in Western Europe, as precipitation in some areas (mainly southern Europe) can originate from either the Atlantic or the Mediterranean, with the latter exhibiting higher δ 18 O values [25,155,156] and wide range of total δ 18 O variability. The differences in salinity and temperature between the two bodies of water determine the δ 18 O of the moisture throughout the cloud trajectory, although other effects such as continentality, rainout effect or altitude also contribute to the final δ 18 O signal.…”

Section: Controls On δ 18 O Spelmentioning

confidence: 99%

The Potential of Speleothems from Western Europe as Recorders of Regional Climate: A Critical Assessment of the SISAL Database

et al. 2018

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Western Europe is the region with the highest density of published speleothem δ 18 O (δ 18 O spel ) records worldwide. Here, we review these records in light of the recent publication of the Speleothem Isotopes Synthesis and AnaLysis (SISAL) database. We investigate how representative the spatial and temporal distribution of the available records is for climate in Western Europe and review potential sites and strategies for future studies. We show that spatial trends in precipitation δ 18 O are mirrored in the speleothems, providing means to better constrain the factors influencing δ 18 O spel at a specific location. Coherent regional δ 18 O spel trends are found over stadial-interstadial transitions of the last glacial, especially in high altitude Alpine records, where this has been attributed to a strong temperature control of δ 18 O spel . During the Holocene, regional trends are less clearly expressed, due to lower signal-to-noise ratios in δ 18 O spel , but can potentially be extracted with the use of statistical methods. This first assessment highlights the potential of the European region for speleothem palaeoclimate reconstruction, while underpinning the importance of knowing local factors for a correct interpretation of δ 18 O spel . Quaternary 2018, 1, 30 2 of 30and AnaLysis (SISAL) database (SISAL_v1) contains 376 speleothem records from across the globe [3]. About a quarter of these records (92) are from Western Europe, making it the region with the highest density of published speleothem datasets worldwide [3]. This paper reviews these records within the wider (palaeo-)climatic context of Western Europe, with the objective to identify and promote the potential of cave sites in the region for future palaeoclimate studies. Moreover, we test the suitability of a large compilation of speleothem records to reveal the existence of regional trends in space and time [4].While early studies on Western European speleothems principally focused on their availability for temperature reconstruction using δ 18 O of the carbonate [5,6], it was quickly recognised that δ 18 O spel is driven by a complex interplay of regional and site-specific factors, such as moisture source and circulation dynamics, amount of precipitation, dripwater residence time in the overlying karst, cave temperature and ventilation dynamics, and potential kinetic effects during carbonate deposition [7,8]. Due to the filtering effect of the soil-karst system, the δ 18 O spel signal is usually strongly temporally attenuated compared to precipitation δ 18 O, and affected to varying degrees by local noise [4]. This is particularly pronounced at mid-latitude sites and over the Holocene, when ranges in δ 18 O spel are typically small (average standard deviation of Western European δ 18 O spel in SISAL_v1 is 0.36 ) and reflect only moderate climate shifts, as is apparent from other palaeoclimatic evidence (e.g., [9]). Over glacial-interglacial timescales, changes in the seasonality of precipitation and the spatial stationarity of climate patterns need...

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Climate controls on rainfall isotopes and their effects on cave drip water and speleothem growth: the case of Molinos cave (Teruel, NE Spain)

Abstract: 23The interpretation of stable isotopes in speleothems in terms of past temperature variability or

Cited by 48 publications

References 42 publications

Western Mediterranean Climate Response to Dansgaard/Oeschger Events: New Insights From Speleothem Records

Western Mediterranean Climate Response to Dansgaard/Oeschger Events: New Insights From Speleothem Records

A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles

The Potential of Speleothems from Western Europe as Recorders of Regional Climate: A Critical Assessment of the SISAL Database

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